The way in which we conduct business is changing on an almost daily basis. Business isn't closed by dropping off some bagels and business cards anymore. Keeping track of your clients in a spreadsheet is so archaic, the last time I did that, I fell off my dinosaur. But seriously, every single prospect, every lead, and every customer has a variety of needs.
Now if you work for a large-enterprise organization, you're most likely using a CRM and understand the value it brings to your business.
If you don't see the value, then there's a good chance you're using the wrong CRM.
If you work at a start-up, small, or mid size business, there's a possibility you aren't using a CRM, and that in itself may be the biggest hindrance for your company's growth.